| 水平地震作用下考虑轴向力作用的桩间动力相互作用因子 |
| |
| 引用本文： | 蒋建国,邹银生,周绪红,易晓华.水平地震作用下考虑轴向力作用的桩间动力相互作用因子[J].岩土工程学报,2002,24(6):764-768. |
| |
| 作者姓名： | 蒋建国 邹银生 周绪红 易晓华 |
| |
| 作者单位： | 湖南大学土木工程学院；岳城水库管理处 湖南长沙 410082；湖南长沙 410082；河北磁县 056503； |
| |
| 基金项目： | 国家自然科学基金(50078021)，教育部科学技术研究重点项目(99089)联合资助项目 |
| |
| 摘 要： | 在N.Markris和G.Gazetas工作的基础上,考虑水平地震作用下桩受轴向力作用,利用梁的动力微分方程,求解桩间动力相互作用因子的简化计算方法。通过分析表明,在轴向力作用较大的情况下,动力相互作用因子的影响较为明显。在对所得结果与前人工作结果比较的基础上,提出考虑轴向力作用时的影响因素,包括桩土之间的弹性模量之比、无量纲频率及桩距等。算例表明,这一方法具有更可靠的计算精度。
|
| 关 键 词： | 群桩 动力Winkler地基模型 动力相互作用因子 |
| 文章编号： | 1000-4548(2002)06-0764-05 |
| 修稿时间： | 2002年3月20日 |
Dynamic interaction factor under lateral seismic excitation considering the effect of axial load |
| |
| JIANG Jianguo,ZOU Yingsheng,ZHOU Xuhong,YI Xiaohua.Dynamic interaction factor under lateral seismic excitation considering the effect of axial load[J].Chinese Journal of Geotechnical Engineering,2002,24(6):764-768. |
| |
| Authors: | JIANG Jianguo ZOU Yingsheng ZHOU Xuhong YI Xiaohua |
| |
| Affiliation: | 1.Civil Engineering College of Hunan University Changsha 410082 China 2.Department of Reservoir Administer of Yue City Ci county 056503 China |
| |
| Abstract: | Based on the dynamic differential equation of beam, the dynamic interaction factor under lateral seismic excitation considering the effect of axial load is analyzed in this paper. It is found from the analysis under special situation that the large axial load had obvious effect on dynamic interaction factor of group pile. The affected elements are analyzed in comparison with previous result, which mainly are dimensionless frequency, the elastic modulus ratio of pile to soil, and the distance between two piles etc. The numerical results showed that the method is more rigorous to be used to calculate the dynamic interaction factor. |
| |
| Keywords: | group pile dynamic Winkler foundation model dynamic interaction factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土工程学报》浏览原始摘要信息 |
|
点击此处可从《岩土工程学报》下载全文 |
